A child has hot, swollen, exquisitely tender knees and ankles, with symptoms moving between joints over several days. Which manifestation is most likely?
Answer
Migratory polyarthritis of ARF
Explanation
The scenario describes acute inflammation of large joints that moves between sites, characteristic of ARF migratory polyarthritis. **Key takeaway:** Large-joint migration is a strong pattern clue. **Glossary:** Exquisitely tender: markedly painful to touch.